Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Deficit [Member]
Beginning balance at Dec. 31, 2017	$ 93,752	$ 18,547	$ 209,253	$ (14,541)	$ (119,507)
Stockholders' Equity [Roll Forward]
Net income	6,844	0	0	0	6,844
Foreign currency translation adjustment	(1,720)	0	0	(1,720)	0
Shares issued under incentive plans, net of shares withheld for tax	93	51	42	0	0
Stock compensation expense	953	0	953	0	0
Pension liability, net of tax	201	0	0	201	0
Declared dividends	(4,197)	0	0	0	(4,197)
Ending balance at Mar. 31, 2018	95,926	18,598	210,248	(16,375)	(116,545)
Stockholders' Equity [Roll Forward]
Adoption of ASU | ASU 2018-02 [Member]	0	0	0	(315)	315
Beginning balance at Dec. 31, 2018	154,638	21,547	292,558	(18,280)	(141,187)
Stockholders' Equity [Roll Forward]
Net income	6,770	0	0	0	6,770
Foreign currency translation adjustment	777	0	0	777	0
Shares issued under incentive plans, net of shares withheld for tax	(828)	80	(908)	0	0
Stock compensation expense	958		958	0	0
Declared dividends	(4,794)	0	0	0	(4,794)
Ending balance at Mar. 31, 2019	158,426	21,627	292,608	(17,503)	(138,306)
Stockholders' Equity [Roll Forward]
Adoption of ASU | ASU 2016-02 [Member]	$ 905	$ 0	$ 0	$ 0	$ 905